کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2024478 1542602 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Combined effects of abiotic factors on Collembola communities reveal precipitation may act as a disturbance
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش خاک شناسی
پیش نمایش صفحه اول مقاله
Combined effects of abiotic factors on Collembola communities reveal precipitation may act as a disturbance
چکیده انگلیسی


• Precipitation may act as a disturbance on collembolan communities.
• Saturated conditions led to a loss of abundance in collembolan species of all sizes.
• Temperature and CO2 effects are likely mediated through effects on soil moisture.

Global increases in temperature and atmospheric CO2, coupled with increasingly sporadic and intense precipitation regimes, may affect the biodiversity of boreal forest communities, potentially leading to shifts in functional process rates such as decomposition. However, the effects of these factors on microarthropod community composition have not been thoroughly studied in combination in controlled settings. We conducted a full factorial experiment exposing moss/soil mesocosms to three temperatures (11.5, 15.5, and 19.5 °C), two CO2 levels (430 ppm and 750 ppm), and three moisture levels (drought, intermediate, and saturated conditions) for 18 weeks. Following treatment, we quantified effects on species diversity of a representative group of mesofaunal microarthropods, the Collembola. We also quantified the effects of these factors on the distribution of collembolan body sizes as an indicator of functional changes in the community. We found that moisture regime was a dominant factor, with increased precipitation leading to decreased collembolan abundance and richness. The mechanisms of these detrimental effects are unclear but may be due to the saturation of air-filled soil pore space or competition with moisture-tolerant species. Severe precipitation regimes caused a general loss of abundance in species of all sizes, which may have long term effects on boreal forest soil food webs.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soil Biology and Biochemistry - Volume 82, March 2015, Pages 36–43
نویسندگان
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